대형폐쇄생태계를 이용하여 미래기후조건에서 연안식물플랑크톤 군집 구조 변화

Abstract

The change of coastal phytoplankton community structure to the predicted ocean acidification and sea surface warming was studied using an outdoor mesocosm approach. The each enclosed mesocosm bag was filled with coastal waters from Jangmok bay in South Sea, Korea, and two sets of CO2 and temperature conditions (control: 380ppm, treatment I : 980ppm, treatment II: 980ppm and +3℃ warmer than control and treatment I) were set up. For the first from 0 to 12 days, nutrient replete period, highest peak of phytoplankton biomass was observed in the treatment I when diatoms were predominated at over 95%. Afterwards the diatoms were decreased and dinoflagellates were increased in all conditions during nutrient depleted period.mok bay in South Sea, Korea, and two sets of CO2 and temperature conditions (control: 380ppm, treatment I : 980ppm, treatment II: 980ppm and +3℃ warmer than control and treatment I) were set up. For the first from 0 to 12 days, nutrient replete period, highest peak of phytoplankton biomass was observed in the treatment I when diatoms were predominated at over 95%. Afterwards the diatoms were decreased and dinoflagellates were increased in all conditions during nutrient depleted period.